ATP1A2- and ATP1A3-associated early profound epileptic encephalopathy and polymicrogyria.
Annalisa Vetro, Hang N Nielsen, Rikke Holm, Robert F Hevner, Elena Parrini, Zoe Powis, Rikke S Møller, Cristina Bellan, Alessandro Simonati, Gaétan Lesca, Katherine L Helbig, Elizabeth E Palmer, Davide Mei, Elisa Ballardini, Arie Van Haeringen, Steffen Syrbe, Vincenzo Leuzzi, Giovanni Cioni, Cynthia J Curry, Gregory Costain Show all
Brain | Published : 2021
Constitutional heterozygous mutations of ATP1A2 and ATP1A3, encoding for two distinct isoforms of the Na+/K+-ATPase (NKA) alpha-subunit, have been associated with familial hemiplegic migraine (ATP1A2), alternating hemiplegia of childhood (ATP1A2/A3), rapid-onset dystonia-parkinsonism, cerebellar ataxia-areflexia-progressive optic atrophy, and relapsing encephalopathy with cerebellar ataxia (all ATP1A3). A few reports have described single individuals with heterozygous mutations of ATP1A2/A3 associated with severe childhood epilepsies. Early lethal hydrops fetalis, arthrogryposis, microcephaly, and polymicrogyria have been associated with homozygous truncating mutations in ATP1A2. We investig..View full abstract